句间停顿:
  • 1S
  • 3S
  • 5S
语速: x 1.0
  • 速度0.8X
  • 速度1.0X
  • 速度1.2X
  • 速度1.5X
  • 速度1.8X
  • 速度2X
始终显示原文
欢迎使用 KMF 精听精研
坚持练习精听,反复听、吃透每个句子,能够快速 提升听力能力
开始精听
或按 「 空格」开始播放

段落1

This is Scientific American 60-Second Science.I'm Cynthia Graber. Got a minute?

点击显示原文

隐藏原文=

A creature called the Atlantic razor clam had a secret.

点击显示原文

隐藏原文=

Digging in wet sand should be slow and take lots of effort.

点击显示原文

隐藏原文=

But the razor clam could burrow a centimeter per second and go half a kilometer using only about a AA battery's worth of energy.

点击显示原文

隐藏原文=

These talents intrigued M.I.T.researchers, who thought that a robotic version of the clam would have practical uses.

点击显示原文

隐藏原文=

So they studied how the mollusk moves.

点击显示原文

隐藏原文=

They found that the clam first contracts its shell.

点击显示原文

隐藏原文=

That action causes sand to fall inward towards the animal.

点击显示原文

隐藏原文=

Further shell contraction draws water into the mix.

点击显示原文

隐藏原文=

At that point, the watery sand starts to behave as a fluid, think quicksand.

点击显示原文

隐藏原文=

The drag on the burrowing clam is dramatically reduced and it starts to really move.

点击显示原文

隐藏原文=

The process requires pinpoint timing of contractions and digging.

点击显示原文

隐藏原文=

Based on their findings, the researchers built a metal mimic.

点击显示原文

隐藏原文=

Its two halves contract and expand, and a rod digs through the sand.

点击显示原文

隐藏原文=

They believe that an energy-efficient Roboclam could anchor an autonomous underwater vehicle, search for mines or lay underwater cables.

点击显示原文

隐藏原文=

Scientists discuss their efforts in the journal Bioinspiration and Biomimetics.

点击显示原文

隐藏原文=

Rather than clamming up.

点击显示原文

隐藏原文=

Thanks for the minute, for Scientific American 60-Second Science. I'm Cynthia Graber.

点击显示原文

隐藏原文=
[ < 空格 > ]
当前句 /
/
  • 段落1
  • 第 1 句
  • 第 2 句
  • 第 3 句
  • 第 4 句
  • 第 5 句
  • 第 6 句
  • 第 7 句
  • 第 8 句
  • 第 9 句
  • 第 10 句
  • 第 11 句
  • 第 12 句
  • 第 13 句
  • 第 14 句
  • 第 15 句
  • 第 16 句
  • 第 17 句
  • 第 18 句

+ 创建收藏夹
保存 取消